I noticed that my daughter's Activity Days is set back an hour to 8 p.m., (presumably due to Daylight Savings Time). All other appointments have not changed. The February appointment still shows 7 p.m.

I've attached the View Event screen shot if it will help trouble shoot. However, it is really small, so here is the text:Event Details

Are those particular events at a different location from the other events you mentioned that still work fine after the DST change? If so, I would suspect that the time zone for the Activity Days location was not set correctly. A stake calendar administrator (e.g., the stake clerk) could look into that possibility.

Questions that can benefit the larger community should be asked in a public forum, not a private message.